A novel fabrication of yttria-stabilized-zirconia dense electrolyte for solid oxide fuel cells by 3D printing technique. (1st March 2019)

• Record Type: Journal Article
• Authors: Wei, Luyang; Zhang, Jinjin; Yu, Fangyong; Zhang, Weimin; Meng, Xiuxia; Yang, Naitao; Liu, Shaomin
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 12(2019)
• Page Start: 6182
• Page End: 6191
• Publication Date: 2019-03-01
• Subjects: Solid oxide fuel cell -- Digital light processing -- Stereolithography -- Yttria-stabilized-zirconia electrolyte -- Three-dimensional printing -- Power density; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.01.071
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Three-dimensional (3D) printing technique represents a revolutionary advancement in the manufacturing sector due to its unique capabilities to process the shape complexity. This work is focusing on dense 8 mol.% yttria-stabilized-zirconia (8YSZ) electrolyte fabrication via digital light processing (DLP)-stereolithography-based 3D printing technique. Multiple 8YSZ electrolyte green bodies are printed simultaneously in a batch using ceramic-resin suspension made of 30 vol% 8YSZ powder loading in a photo-curable resin. Together with an optimized debinding and sintering procedure, the 8YSZ green body changes into a dense electrolyte, and the density of the sintered electrolyte was measured as 99.96% by Archimedes' water displacement method. The symmetric cell fabricated of silver-Ce0.8 Gd0.2 O1.9 (Ag-GDC) as cathode/anode and dense 8YSZ electrolyte printed by DLP-stereolithography delivers a high open circuit voltage of approximately 1.04 V and a peak power density up to 176 mW·cm −2 at 850 °C by using hydrogen as the fuel and air as the oxidant. The electrochemical performance of the symmetric cell Ag-GDC|YSZ|Ag-GDC with 8YSZ electrolyte fabricated via DLP-stereolithography is comparable to that of the same cell with 8YSZ electrolyte fabricated by conventional dry pressing method. This 3D printing technique provides a novel method to prepare dense electrolytes for solid oxide fuel cell (SOFC) with good performance, suggesting a potential application for one-step fabrication of complex structure SOFC stack. Graphical abstract: Image 1 Highlights: Give a new way to fabricate multiple electrolytes for SOFC in a batch. Develop a facile technology for one-step fabrication of complex-shaped SOFC stack. Obtain a new technique for YSZ fabrication by DLP 3D printing. Power density of cells by 3D printing comparable to that by conventional method.